Vector Algebra

If \(P\) and \(Q\) are two points on the curve \(y=2^{x+2}\) in the rectangular cartesian coordinate system such that \(\mathbf{O P} \cdot \hat{i}=-1, \mathrm{OQ} \cdot \hat{i}=2\), then \(\mathrm{OQ}-4 \mathrm{OP}=\)